Reenforcing ends of caps for fiber tubes



Get. 5 1926.

H. PARKER REENFORCING ENDS OF CAPS FOR FIBER TUBES 3 Sheets-Sheet 1 Filed Jan. 19. 1925 dlllll lllilll IIQIIII I IIIIIIIII Oct. 5 1926; 1,602,166 H. PARKER REENFORCING ENDS OF CAPS FOR FIBER TUBES Filed Jan. 19, 1925 3 Sheets-Sheet 2 Oct. 5 1926. 1,602,166

H. PARKER REENFORCING ENDS OF CAPS FOR FIBER TUBES F iled Jan. 19, 1925 5 Sheets-Sheet 3 I 22/ v I fg U /Z /1 2L} f fl Z9 Patent ct. 5, 1926.

sATss KOWABD IABKEB, OF BERLIN, NEW E A'HPS, ASSIGNOB TO BROWN comm,-

OF BERLIN, NEW HAMPSHIRE, A CORPORATION OF BEENI'OBOING ENDS OF GAPS I03 FIBER 1'8,

Application med misery 19, as. Serial so. am.

This invention-relates to tubular cores or mandrels on which a roll of paper is wound and more particularly to the metal caps or reenforcing ends thereof.

The cores of the desired diameter are usually produced from fibrous material such as cloth, paper or pulp. In some cases, where paper or cloth is employed for the purpose, the convolutions thereof are united or cemented together by any suitable material, and in others the, core is made by winding a web of wet cellulose pulp upon a mandrel in such manner as to produce a nonlaminated wall ofinter-felted cellulose 1 fibers.

A tubular core, such as herein referred to, according to the present invention is provided at each end with a notched cap'of novel construction as will be hereinafter pointed out.

On the accompanying drawmgs,-

Figure 1 represents the metal cap ready for placement upon the end of a fiber core or mandrel.

Figure 2 represents a longitudinal section of the end of a core having the cap thereon.

Figure 3 represents one form of reenforcing member which is employed as a portion ,of the cap.

Figure 4 represents one end of the core. Figure 5 represents another form of the end cap.

Figure 6 represents a section on the hne 6--6 of Figure 5.

as Figure 7 represents a slightly different form of cap.

Figure 8 represents a sectional reenforcingmember such as may be used therein.

Figure 9 represents a section on the line 4 99 of Figure 7.

Figure 10 shows anotherform of an annular sectional reenforcing member.

Figure 11 illustrates a part of the cap with said member indicated in dotted lines.

Figure 12 illustrates a cap with a different form of reenforcing member.

Figure 13 shows a section therethrough, with a part of the inner sleeve broken away.

Figure 14 shows the reenforcing member.

Figure 15 shows the recessed end of the core. 4

Figure 16 illustrates the end of a core having a reenforcing member like that in Figure'14, but with the outer sleeve continuous.

Figure 17 represents a section on the line 17- 17 of Figure 16.

-F 1gures. 18 and 19 illustrate another embod1 ment of the invention.

Figure 20 illustrates a core having a cap with another form of reenforcing member.

Figure 21 represents a section on the line 21- 1 of Figure 20.

F1 re 22 represents the reenforcing mem er. On the drawings, the core or mandrel is Indicated at 10 and it consists as ordinarily of a tube of the proper length and diameter, only one end portion of the tube being shown. It will be understood that each end of the core or mandrel is provided with one of the caps or metal reenforcing ends which I shall now describe.

Each cap-is formed of a single sheet of sheet metal which is subjected to a series of drawing operations by means of suitable presses so that it finally consists of an inner sleeve 11, an outer sleeve 12, and a rim 13 which integrally conncctsthe inner and outer sleeves. These sleeves and the integral rim are relatively light in weight and possess great strength. Between the sleeves there is an annular recess of proper dimensions to receive the end of the core, which preferably is rabbeted internally and externally to a depth equal to the thickness of the sleeves. In this annular recess as shown in several of the figures, there is inserted a metal reenforce 14 so as to bear against the inner surface of the rim and against the confronting surfaces of the sleeves 11 and 12. The reenforce may be formed in various ways such as hereinafter described, but in any event it is so constructed as to afford a notch therein. For example the reenforce may be formed as a ring as illustrated in Figure 3 with a gap or notch therein such as indicated at 15. In this case the lower end of the notch may be bridged as indicated at 16. It is not necessary, of course, that the reenforce should be formed in one piece. It may, for example, consist of two or more sections, as in Figure 8, wherein the reenforce is indicated as comprising the two split ring sections 17, 18, whose separated ends afiord a notch 19 and another split ring section 20, the spaced ends of which are opposite the notch 19. In this case the section 20 afiords a bridge 21 closing the lower end of the notch 19.. In the event that the ring 10 I is formed of two or more sections, they may be, if desired, spot-welded at one or more points'so as to rigidly connect them together. Or the reenforce may consist o,f a relatively wide ring section 22 having a gap or notch 23 between its ends, and a single narrow section 24-which bridges the gap 23, as shown in Figures 10 and 11. For light cores of the cheaper grade, a split ring 221 of less width than the depth of the notch 222 in the inner and outer sleeves, may be employed as the recnforce as shown in Figures 18 and 19, in which case it is preferably spot-welded at several points to the sleeves, as indicated at 223, 224. The ends of the annular member are flush with the walls of the notches in the sleeves.

It is not wholly essential that the metallic reenforce should be annular and occupy the entire end or bottom of the annular recess of the cap, since it may consist of a single arcuate block orshort section 25 havlng a gap or notch 26, as shown in Fi ures 13 and 14. In this case, it is especial y desirable to electrically spot-weld the reenforce to the sleeves at points on both sides of and below the notch as indicated at a, b and 0. In this instance the end of the core may be slotted or recessed to receive the reenforce, as shown at 10, Figure 15.

When a reenforcing member is employed, as last described, only the rim and the inner sleeve need be notched, as shown in Figures 16 and 17, in which case the outer sleeve is continuous or unnotched, having a wall 261 closing the outside of the notch in the cap. The reenforcing member need not be solid. It may be made of a thin strip of angle iron bent or drawn substantially into U shape as shown in Figure 22 at 262 and having the lateral flanges 263, 263 which lie in parallel planes. The web 264: which conmeets the flanges 263, constitutes a wall which defines the notch in the cap, and it lies between the two sleeves of the cap and lies flush with the edges formed by cuttin a notch or recess in the sleeves and rim 0 the cap. The flanges 263 are electrically welded to the inner confronting faces of the sleeves.

One or both sleeves 11 and 12 and the rim 13 in all the embodiments of the invention are notched or cut away, but in some cases this is done in such manner that a portion of the metal of the inner sleeve or the outer sleeve as the case may be is forced across the side walls of the notch in the ring. In Figlures 1 and 2, for example, the metal (w ich ordinarily forms a part of the inner sleeve) is drawn radially outwardly so as to project through the notch in the ring and thus cover the walls of the notch as indicated at27. As a result of this construction,

"the calpnis provided with a notch or recess exten g entirely therethrough. so as to receive the projection or clutch on the driving member y which the finished core is rotated in wmdin a web thereon. While the metallic cover or the walls of the notchin the reinforce ma be afforded by drawing or forcing the metalof the inner sleeve through the notch in the surface, it may, however, be accomplished by forcing the metal of the outer sleeve inwardly throu h the notch as shown at 28 in Fi ure 5. ere a reenforce such as shown in of the inner sleeve ma be drawn outwardly so as to cover the si e walls as at 280 in Figure 7 but not the bottom wall of the notch in the ring, leaving the upper face of the lower section. 21 of the ring exposed.

In the constructions, shown in Figures 1 to 11, the end of the fiber core abuts solidly against the annular reenforce, the latter itself being of a width at least as dee as the notch in the whole metal end; and conseigure 8 is used, the metal 4 quentl it is wholly unnecessary to notch the end 0 the fiber core to coincide with the driving notch in the ca The lip 01 flange, which extends across t e walls of the notch in the annular reentorce, in the last mentioned figures, securely locks the ring against rotative movement within the sleeves, and may receive the thrust of the driving member by which the finished core is rotated. If desired, however, the annular reenforce may at one or more points he spot-welded to the inner or outer sleeves or both.

Where a drawn metal cap member is placed upon a fiber core so that the end of the core abuts against the rim 13, or where it is spaced from the rim 13, in either case the drawn metal walls of the notch and the ends of the finished core are frequently so distorted and bent by the rough handling to which the cores are subjected in the ordinary mill, that the core is rendered useless and will not properly fit the driving members by which it is rotated. By employing as a part of the one-piece member, that is, the drawn metal port1on of the cap, a rigid reenforcing member which fills the end of the annular recess between the inner and outer sleeves on both sides of the notch, the cores may be handled roughly and thrown about without materially damaging or misshaping or distorting the ends thereof. B this construction also there is afforded a re atively light and cheap cap of greater strength and endurance or durability than has heretofore been afforded. The core may be held against axial movement relatively to the end caps by s inning or forcing the extremities of the s eeves into the inner and outer faces of the tube or by forming indentations in the outer sleeve which project into similar indentations in the fiber core. Preferably, however, in order to prevent any possibility of arelative movement of the core and the cap, where there is employed. a

reenforcing member against which the end of the core abuts, either or both of the two sleeves may be formed with projections 29 extending into the annular space between the sleeves. These are formed by forcing or drawing the metal of the sleeves so that the internal projections provide ke s to occupy a slot 30 formed in the end 0 the core as shown in Fi ures 1, 2, 4 and 18. The concavo-convex eys 29 may touch each other, and in any event they are usually formed out of alinement with the notch in the cap.

What I claim is 1. A core cap comprising an inner sleeve, an outer sleeve and an integral connecting rim all formed of sheet metal, and providing an annular recess between said sleeves, and a metal reenforce seated in said recess, said reenforce and the inner and outer sleeves and said rim having a notch open internally and externally of said cap to receive a driving member.

2. A core cap comprising a one-piece drawn sheet-metal member having an inner sleeve, a concentric spaced outer sleeve and an integral rim, and a notched reenforce seated against said rim between the inner and outer sleeves, said metal member having a flange or lip extending into the notch in said reenforce and seated against the wall thereof.

3. A core cap comprising a one-piece drawn sheet-metal member having an inner sleeve, a concentric spaced outer sleeve and an integral rim, and a notched reenforce seated against said rim between the inner and outer sleeves, and one of said sleeves having a portion extending radially of the cap into the notch in said reenforce.

4. A core cap comprising a one-piece.

drawn sheet-metal member having an inner sleeve, a concentric spaced outer sleeve and an integral rim, and a notched reenforce welded to both sleeves andseated against said rim between the inner and outer sleeves, one of said sleeves having a portion extendsaid reenforce and said sleeves and said rim having notches registering with the notch in the reenforce.

5. A core cap comprising a sheet-metal member having spaced concentric inner and outer sleeves and an integral connecting rim, and an annular reenforce seated against the said rim between said sleeves, said sheetmetal member and said reenforce having a driving notch, and one of said sleeves having a radial portion projecting into the notch in the reenforce and covering the side walls thereof.

6. The combination of a tubular core; and a cap therefor, said cap comprising a sheetmetal member having spaced concentric inner and outer sleeves and an integral connecting rim, and an annular reenforce located in the annular space between the inner and outer sleeves and seated against said rim; the tubular core having its end prejecting into said annular space and seated against said reenforce; and said cap having a notch or recess to receive a driving member.

7. A core cap, comprising an outer sleeve, an inner sleeve and an integral connecting rim forming an annular recess, and provided with a driving notch,one or both of said sleeves having a ortion thereof, spaced from the rim and rom the notch, projecting into the annular recess to provide a key toenter a slot in the core.

8. A core cap, comprising an outer sleeve,

In testimony whereof I have aflixed my signature.

HOWARD PARKER. 

